Izimfanelo Zomkhiqizo

Iketango lesiginali nokuphathwa kwamandla: izinhlobo ezimbili ezibalulekile ze-analog chip

Imikhiqizo yochungechunge lwezimpawu, ikakhulukazi ehlanganisa izikhulisa-zwi neziguquli zedatha, isingatha izimfuno zokusebenzisana kolwazi.Kuhlelo oluxubile lwedijithali-kuya-analog, inqubo ephelele yokucubungula isignali imi kanje.

Izinzwa: Amasignali aluhlaza avela emhlabeni wangaphandle, ngokuvamile umsindo, izithombe, izinga lokushisa, umswakamo, ingcindezi, njll., atholwa izinzwa futhi aguqulelwe abe amasignali e-analogi esikhathi esiqhubekayo ahambisana nalawa masignali abonakalayo, ngokuvamile ngendlela ye-voltage/ okwamanje.

Ama-Amplifaya nezihlungi: Izimpawu ze-analog zicutshungulwa ngamayunithi wokulungisa isignali ahlanganisa ama-amplifiers nezihlungi.I-amplifier isebenzela ukukhulisa amasiginali we-analog amancane, abuthaka ukuze ajwayelane nobubanzi bokufakwa kwesikali esigcwele se-ADC;isihlungi sisebenza ikakhulukazi ukukhawulela isiginali ukuze sanelise izimfuneko zethiyori yesampula ye-Nyquist.

Isiguquli sedatha: i-ADC iguqula i-voltage/isiginali yamanje ecutshunguliwe ibe inani ledijithali elihambisanayo, elinikezwa iyunithi yedijithali elandelayo ukuze icutshungulwe.

Ukucutshungulwa kwedijithali: Amanani ahlukene edijithali afakwa kudijithali ngohlelo lokucubungula lwedijithali (MCU, DSP, noma FPGA), oluvame ukusetshenziselwa ukusebenzisa ama-algorithms okucubungula isignali yedijithali.

Isiguquli sedatha: Amanani ahlukene edijithali ngemva kokucubungula uhlelo lwedijithali athunyelwa ku-DAC, okuthi ngawo aphinde aguqulwe abe isignali ye-analog eqhubekayo.

Izihlungi: Njengoba isignali yokuphumayo ye-DAC iqukethe izingxenye zefrikhwensi ephezulu "yesinyathelo", isihlungi sokusetha kabusha sisetshenziselwa ukuhlunga umsindo we-high-frequency, okuholela esignali yokuphumayo ehlelwe kabusha ye-analog.

Okubaluleke kakhulu kulezi yi-amplifier yokusebenza kanye nesiguquli sedatha.

Ama-amplifiers okusebenza "amabhulokhi wokwakha ayisisekelo" amasekhethi e-analog futhi asetshenziswa ezinhlobonhlobo zezinhlelo zokusebenza.Ama-amplifiers okusebenza amasekhethi okukhulisa angeza futhi ahlanganise amasignali e-analog futhi avame ukusetshenziselwa ukukhulisa amasignali amancane, abuthaka abe amakhulu.Ngesikhathi esifanayo, ama-amplifiers asebenzayo ayisisekelo semishini eminingi ye-analog, njengeziguquli ze-digital-to-analog, iziguquli zamanje eziya ku-voltage, izihlungi, iziqhathanisi, nezilawuli zemigqa.Kungashiwo ukuthi ama-amplifiers asebenzayo "amabhulokhi wokwakha ayisisekelo" wezifunda ze-analog.

Iziguquli zedatha ziyibhuloho phakathi kwezinhlelo ze-analog nedijithali futhi zibalulekile.I-analog-to-digital converter (ADC) inesibopho sokuguqula amasignali e-analog abe amasignali edijithali futhi isiguquli sedijithali-kuya-analogu (DAC) sinesibopho sokuguqula amasignali edijithali abe amasignali e-analog.Izinzwa ziguqula amazinga okushisa omhlaba wangempela, izingcindezi, imisindo, njll. kube amasiginali kagesi, okungamasiginali we-analog futhi angakwazi ukubonwa futhi acutshungulwe amasistimu edijithali.Kuphela ngokuguqulwa kwe-ADC lapho zingabanjwa futhi zisetshenzwe yi-MCU.Ukwengeza, izipikha, njll. zidinga okokufaka kwesignali ye-analog ukuze zisebenze, ngakho-ke ama-DAC ayadingeka ukuze kuguqulwe amasignali edijithali aphumayo ngohlelo lwedijithali abe amasignali e-analog.Ngakho-ke, noma nini lapho ukucubungula kwedijithali kubandakanyeka, isiguquli sedatha kufanele sibe khona.

Ama-Op-amps ayisisekelo samadivayisi amaningi e-analog, isibonelo, izihlungi zenziwe ngama-op-amps nama-resistors.

Iziguquli zedatha zifaka iziguquli ze-digital-to-analog (DACs) kanye neziguquli ze-analog-to-digital (ADCs)

Ukuphathwa kwamandla kuyimfuneko kumasekhethi kagesi.Inqobo nje uma isistimu ye-elekthronikhi idinga ukunikezwa kwamandla, ukunikezwa kwamandla okujwayelekile ama-adaptha kagesi, amabhethri, njll. Kuye ngohlobo lwamanje okokufaka nokukhiphayo, singahlukanisa abaphathi bamandla ngezinhlobo ezi-4 eziyinhloko: AC-DC (rectifier), AC. -AC (inverter, njll.), DC-DC (chopper), kanye DC-AC (inverter).

I-switching rectifiers (AC-DC) inesibopho esikhulu sokuguqula amandla e-AC abe amandla e-DC futhi ngokuvamile atholakala kuma-adaptha amandla amakhompyutha aphathekayo.

Iziguquli ze-AC-AC (AC-AC) zinesibopho sokuguqula imvamisa ethile yamandla e-AC iye kwesinye imvamisa engaguquki noma eguquguqukayo yamandla e-AC.

Isiguquli se-DC-DC (DC-DC) siguqula amandla e-DC abe amanye amandla e-DC anezici ezihlukile zefrikhwensi, isigaba, samanje, kanye ne-voltage.

Ama-Inverters (DC-AC) ashintsha iziguquli aguqula amandla e-DC abe amandla e-AC, amanye azibiza ngeziguquli, futhi ayizingxenye eziyinhloko ze-AC okukhipha amandla okushintshwa kwamandla kanye nezinto zikagesi ezingaphazamiseki (UPS).

Ama-chips okuphatha amandla amasekhethi okuphatha amandla adidiyelwe imisebenzi yawo eyinhloko okuwukulawula i-voltage, i-voltage boost, i-voltage engaguquki, ukuguqulwa kwe-AC-DC, njll. Ahlukaniswe ngama-linear voltage regulators (LDO), ama-charge-pump (Iphampu yeshaja), DC. -DC converters (DC-DC), AC-DC converters (AC-DC), LED driver chips, njll. Izinhlelo zokusebenza ezijwayelekile amashaja nezishayeli ze-LED zama-elekthronikhi omthengi afana nomakhalekhukhwini namakhompyutha wezincwadi.Isibonelo, izilawuli zikagesi zehlisa amandla kagesi angu-220V bese zikhipha amandla kagesi aphansi e-DC ezinzile ukuze zisetshenziswe kumakhompyutha amanothibhuku;Abashayeli be-LED bakhuphula amandla angaphakathi omakhalekhukhwini ukushayela ukukhanya kwekhamera.